In order to declare certain areas out of bounds for certain residents the army had to create military zones, from which all residents were to be evacuated, except those with passes that had been issued by the military. Japanese Americans were informed that their formal evacuation of Military Area No. 1 would soon follow, and until that point they were advised to move into the interior voluntarily. It was implied that once Japanese Americans had moved voluntarily, it was likely that there would be no further need to move again, hence the government would not be under pressure to initiate mass evacuation. However this was not to be the case because nowhere near as much voluntary evacuation took place as was deemed necessary by the government.